Tractor.



N. & L MLSUN.

TRACIOR.

APPLlCATION men mun 5, Wu. RENEWED JUNE n. 1915 LlfiQfiUT Patented Dec. 14, 1915.

M/ r/vfss E S rlnaeron.

i l casor.

Specification of Letters Patent. Patented 1) 06 14 1915' Application filed June 5, 1911, Serial No. 631,493. Renewed June 17, 1915. Serial No. 34.741.

' To all whom it may concern Be it known that we, NILs Nlnsox and Lnoxano NiLsoN, ,of lVayzata, l-lennepln county, Minnesota, have invented certain new and useful Improvements in Tractors, of which the following is a specification.

The primary object of our invention is to provide a tractor with means whereby the draft of the plows or other device or implement being drawn by the tractor will oper ate to increase its traction.

A further object is to provide a plow attachment thatis capable of convenient application to a traction engine and may be readily removed therefromwhen it is desired to substitute some other agricultural implement.

The invention consistsgenerally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

, In the accompanying drawings forming part of this specification, Figure 1 is a plan view of a traction machine embodying our invention, Fig. 2 is a side elevation of the same, Figs. 3 and 4 are detail views showing the preferred means forconneeting plow beams to the frame of the machine when the machine is used for pulling plows.

In the drawing, 2 represents a frame having a forward axle 3 and carrying wheels 4.

5 is a source of power mounted on said frame and 6 is a driving shaft actuated by said source of powerand having a friction wheel 7 slidably mounted thereon. A friction disk 8 is movable toward and from said wheel 7 and is driven by frictional contact with said wheel. This disk is preferably mounted on a shaft 9 and a sprlng 10 normally holds it in engagement with said wheel. The outer end of the shaft 9 may be provided with a pulley 11 12 is a drive chain connecting the shaft 9 with a rear traction wheel 13 which is mounted in hearings in the rear portion of the machine frame and a similar belt 14 connects the shaft 9 with a shaft 15 that ex tends transversely of the machine frame. A yoke 16 is provided to straddle the wheel 13 and is supported at its lower: ends on the frame of the machine. .Upon this yoke a [bar 17 is centrally pivoted, having its forward end adapted to oscillate vertically inv a guide 18 having holes 19 into which pins may be thrust for the purpose of locking the bar in any desired position therein. A cable 20 is attached to the bar 17 and is adapted to be wound on the shaft 15, one end of the cable being conveniently located with re-.

speet to the drivers seat 21, so that the driver may manipulate the bar 17 and regulate the period of lifting the plows. A frame 21 is mounted on hubs 15 and projects rearwardly therefrom and carries a plow-beam guiding mechanism as will hereinafter appear. Bell cranks 22 are pivoted on the machine'frame and connected by rods 23 with a rock shaft 24 having an operating lever 25. The frame 21 is provided with pins 21 in the path of the arms of the bell cranks 22, so that when these bell cranks are oscillated the frame 21 will be lifted to raise the plow beams. In this way the depth of the furrow may be controlled. I

At the rear ofthe machine is a series of plows 26 having beams The forward ends of the plow beams are pivotally con' .nected wlth loops 28 which are in turn pivoted on the lugs 29 of a plate 29 and are adapted to rotate on their pivots and are supported by plates 30 bolted to the frame 21. The plates 30 have a peripheral notch 32 therein adapted to receive a pin 33 on the plate 29'. The twisting of the machine, as in turning, will be eom 'iensated for bv the rotation of the plates 25) and the pins there-- on will limit the rotary movement of the pivotal connections of the beams with the rear portion of the tilting frame. The beams 27 are provided with a series of holes 34c in which draft chains are adjustable, said chains extending to a point above the traction wheel and being connected to the yoke 16 so that the pull of the chains-in drawing the plows will tend to draw the yoke downwardly and increase the traction of the wheel. The yoke 16, or other suitable draft attaching means that may be employed, extends above the axis of the traction wheel and the 'pull ofthe draft chains thereon tends to lift the forward end ofthe machine frame and facilitate the turning off the forward carrying wheels in guidlng the-g1 plows, and the varying sizes of the quading from our invention or the scope of the in size.

sults in a proportionate increase in the tractwo power of the ma'ch1ne, an' l the harder and has a sleeve 38 loosely mounted thereon provided. with quadrants 39 and 40, varying Lifting chains 41 and 42 are attached tot-he draft chains and to the quadrants, and one of said draft chains is connected at 43 to the bail 36. The sleeve 38 has an arm ll thereon connected by a link 45 with the rear end of'the bar 17, so that when said bar is tilted the bail 36 will be liftedand with it the draft chains and the rants with respect to one another and to their connection with the bail are such that the plows, instead; of being lifted simultaneously, will be lifted one at a time asthey approach a predetermined point so that when all of the plows are lifted out of the ground the furrows will be of the same length and their ends will be in alinement.

WVhilewe have shown thetractor as used for pulling the plows, it will be understood that it may be used for pulling other implementsvor. devices, such as barrows, seeders, etc.,-and that wherever used the draft of the implement or device being drawn will increasethe traction of the machine.

ljVehave, in the foregoing specification, pointed out the preferred manner which we contemplate using in applying the principle "of'our invention, but we donot limit ourf' selves to the details of construction, the arrang'ement of the elements herein shown and de'scribed or to the size and proportion of the elements illustrated, as the same may be varied in many particulars without departclaims herein.

\Ve claim as our invention 1. The combination, with a frame having forward carrying wheels and a source of motive power and a rear traction wheel, of a yoke straddling said rear traction wheel,

a'series of plows, means pivotally connect ing the beams of said plows with said frame, a'flexibledraft means connecting said plow beams with the upper portion of said yoke, whereby the strainon said draft means will'increase the traction of said wheel.

'2. The combinatidn, with a frame having forward carrying wheels, a source of motive power and a rear tract-ionwheel, ofa tilting. frame, plows having forwardly projecting beams, swivelconnections betwec'r said plows and said tilting'frame, and draf connections between said plows and said first named:- frame. I I y I 3. The combinatiomfwith a' frame having 'for\vard"carr ing wheels, atsource of motive power and a rear traction wheel, of a frame pivoted jo'n said first named frame and extending backwardly on each side of said traction wheel, means mounted on said first named frame for lifting said pivoted frame, a series of plows having their beams pivotally connected with the rearportion of said pivoted frame, a yoke mounted on said first named frame and means connecting said plow beams with said yoke above the top of said traction wheel.

4. The combination, with a frame having carrying wheels, a source of motive power and a rear traction wheel, of a frame pivoted on said first named frame and extending rearwardly therefrom, means mounted onsaid first named frame for lifting said pivoted frame, a series of plows and beams therefor having swiveled connections with the rear portion ,of said pivoted frame, and draft connections "attached to the middle portions of said plow beams and having a rigid connection with said first named frame above the axis of said rear traction wheel.

The combination, with a frame having forward carrying wheels, :1 source of motive power and a rear traction wheel, of a frame pivoted on said first named frame infront of said rear traction wheel and extended backwardly in the rear of said. traction wheel, aseries of plows having their beams pivotally connected with the rear portion of said pivoted frame, a draft connection for said plows adapted to exert a downward lifting said pivoted frame.

6. The combination, with a frame having forward carrying wheels, a source of motive power and a rear traction wheel, of a frame pivoted on said first named frame and extending rearwardly therefrom, a series of plows having their beams pivotally connected with said pivoted frame, flexible draft means connected to the middle portions of said plow beams above their pivotal connections with said frame, and means moun'ted'on said first named frame and connected to said flexible draft means above said traction wheel.

7. The combination, with aiframe having forward carrying wheels, a source of motive power and a rear traction wheel,,of a series of plows having 'swiveled connections at their forward ends, a yoke straddling said rear traction wheel, and flexible connections between the upper portion of said yoke and the middle portions of said plow beams.

8. The combinatiolu with a frame having carrying and traction wheels, of a secondary frame pivoted on said first named frame, a series of plows having their beams pivotally connected with said secondary frame, means mounted onsaid frame and having a draft connection above the axis of the rear traction wheel with said plow beams in the rear of their pivotal connections with said secondary frame.

tionwheel, of -'draft attaching means se-' insane"? forward carrying wheels and a rear-traccured to said frame, and extending above the axis of said rear traction wheel, a series of plows, means connecting the beams of said plows with said frame and a flexible draft means connecting the said plow beams with meansywhereby thestrain on said draft attaching means will increase the traction of said wheel,

l0. 'Theeombination, with a frame having forward guiding means and a rear traction said traction wheel, and means connecting said implements, in the rear of their frame connections, with the draft attaching meansat a point above said traction Wheel.

tions, the strain on said draft means depressing the rear portion thereof to increase the traction of said wheel.

'12. The combination, with a frame having forward guiding means and a rear traction twist or this patent may be obtained! for wheel, of a draftattachin'g means secured to said frame and extending above the axis of said traction wheel, a series of groundworking implementsand a draft means connecting said implements with the upper por-' 7 tion of said draft-attaching means, whereby the strain on said draft-attaching means will increase the traction of said wheel. theupper portion of said draft attaching 13. The combination, with a frame having forward guiding'means and a rear-trad tion wheel, of a draft-attaching means secured to said frame and extending above the axis of said traction wheel, a ground-working implement and aldraft means connecting the said implement with the upper portion of. said. draft-attaching means, whereby the strain on said draft-attaching means will increase the traction of said'wheel.

14. The combination, with a frame having forward guiding means and a rear traction wheel, of a, draft-attaching means secured to said frame and extending above the axis of said wheel, a series of plows and a draft means connected with said plows and the upper portion of means, whereby the pull of said draft means traction of said wheel.

' In witness whereof, we have hereunto set our hands this 2d day of June, 1911.

, NILS NILSON.

LEONARD NILSON. Witnesses:

GENEVIEVE E. Sommsnn, I EDWARD A. PAUL.

five cents each, by addressing the Commissioner of Patents,

Washington, I. 6.

said draft-attaching upon said attaching means will increase the 

